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1543 lines (1385 loc) · 59.2 KB
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#include "chat-parser.h"
#include "chat-peg-parser.h"
#include "common.h"
#include "log.h"
#include "peg-parser.h"
#include "regex-partial.h"
#include <algorithm>
#include <cctype>
#include <optional>
#include <stdexcept>
#include <string>
#include <string_view>
#include <vector>
using json = nlohmann::ordered_json;
static void parse_prefixed_json_tool_call_array(common_chat_msg_parser & builder,
const common_regex & prefix,
size_t rstrip_prefix = 0) {
static const std::vector<std::vector<std::string>> args_paths = { { "arguments" } };
if (auto res = builder.try_find_regex(prefix)) {
builder.move_back(rstrip_prefix);
auto tool_calls = builder.consume_json_with_dumped_args(args_paths);
if (!builder.add_tool_calls(tool_calls.value) || tool_calls.is_partial) {
throw common_chat_msg_partial_exception("incomplete tool call array");
}
} else {
builder.add_content(builder.consume_rest());
}
}
static std::string wrap_code_as_arguments(common_chat_msg_parser & builder, const std::string & code) {
std::string arguments;
if (builder.is_partial()) {
arguments = (json{
{ "code", code + builder.healing_marker() }
})
.dump();
auto idx = arguments.find(builder.healing_marker());
if (idx != std::string::npos) {
arguments.resize(idx);
}
} else {
arguments = (json{
{ "code", code }
})
.dump();
}
return arguments;
}
/**
* Takes a prefix regex that must have 1 group to capture the function name, a closing suffix, and expects json parameters in between.
* Aggregates the prefix, suffix and in-between text into the content.
*/
static void parse_json_tool_calls(
common_chat_msg_parser & builder,
const std::optional<common_regex> & block_open,
const std::optional<common_regex> & function_regex_start_only,
const std::optional<common_regex> & function_regex,
const common_regex & close_regex,
const std::optional<common_regex> & block_close,
bool allow_raw_python = false,
const std::function<std::string(const common_chat_msg_parser::find_regex_result & fres)> & get_function_name =
nullptr) {
auto parse_tool_calls = [&]() {
size_t from = std::string::npos;
auto first = true;
while (true) {
auto start_pos = builder.pos();
auto res = function_regex_start_only && first ? builder.try_consume_regex(*function_regex_start_only) :
function_regex ? builder.try_find_regex(*function_regex, from) :
std::nullopt;
if (res) {
std::string name;
if (get_function_name) {
name = get_function_name(*res);
} else {
GGML_ASSERT(res->groups.size() == 2);
name = builder.str(res->groups[1]);
}
first = false;
if (name.empty()) {
// get_function_name signalled us that we should skip this match and treat it as content.
from = res->groups[0].begin + 1;
continue;
}
from = std::string::npos;
auto maybe_raw_python = name == "python" && allow_raw_python;
if (builder.input()[builder.pos()] == '{' || !maybe_raw_python) {
if (auto arguments = builder.try_consume_json_with_dumped_args({ {} })) {
if (!builder.add_tool_call(name, "", arguments->value) || arguments->is_partial) {
throw common_chat_msg_partial_exception("incomplete tool call");
}
builder.consume_regex(close_regex);
}
continue;
}
if (maybe_raw_python) {
auto arguments = wrap_code_as_arguments(builder, builder.consume_rest());
if (!builder.add_tool_call(name, "", arguments)) {
throw common_chat_msg_partial_exception("incomplete tool call");
}
return;
}
throw common_chat_msg_partial_exception("incomplete tool call");
} else {
builder.move_to(start_pos);
}
break;
}
if (block_close) {
builder.consume_regex(*block_close);
}
builder.consume_spaces();
builder.add_content(builder.consume_rest());
};
if (block_open) {
if (auto res = builder.try_find_regex(*block_open)) {
parse_tool_calls();
} else {
builder.add_content(builder.consume_rest());
}
} else {
parse_tool_calls();
}
}
common_chat_msg_parser::common_chat_msg_parser(const std::string & input, bool is_partial, const common_chat_syntax & syntax)
: input_(input), is_partial_(is_partial), syntax_(syntax)
{
result_.role = "assistant";
while (true) {
std::string id = std::to_string(std::rand());
if (input.find(id) == std::string::npos) {
healing_marker_ = id;
break;
}
}
}
std::string common_chat_msg_parser::str(const common_string_range & rng) const {
GGML_ASSERT(rng.begin <= rng.end);
return input_.substr(rng.begin, rng.end - rng.begin);
}
void common_chat_msg_parser::add_content(const std::string &content) {
result_.content += content;
}
void common_chat_msg_parser::add_reasoning_content(const std::string &reasoning_content) {
result_.reasoning_content += reasoning_content;
}
bool common_chat_msg_parser::add_tool_call(const std::string & name, const std::string & id, const std::string & arguments) {
if (name.empty()) {
return false;
}
common_chat_tool_call tool_call;
tool_call.name = name;
tool_call.arguments = arguments;
tool_call.id = id;
// LOG_DBG("Tool call arguments:\n\traw: %s\n\tresult: %s\n", arguments.c_str(), tool_call.arguments.c_str());
result_.tool_calls.emplace_back(tool_call);
return true;
}
bool common_chat_msg_parser::add_tool_call(const json & tool_call) {
std::string name = tool_call.contains("name") ? tool_call.at("name") : "";
std::string id = tool_call.contains("id") ? tool_call.at("id") : "";
std::string arguments = "";
if (tool_call.contains("arguments")) {
if (tool_call.at("arguments").is_object()) {
arguments = tool_call.at("arguments").dump();
} else {
arguments = tool_call.at("arguments");
}
}
return add_tool_call(name, id, arguments);
}
bool common_chat_msg_parser::add_tool_calls(const json & arr) {
for (const auto & item : arr) {
if (!add_tool_call(item)) {
return false;
}
}
return true;
}
bool common_chat_msg_parser::add_tool_call_short_form(const json & tool_call) {
if (!tool_call.is_object() || tool_call.size() != 1) {
return false;
}
// Get the tool name (the single key in the object)
auto it = tool_call.begin();
std::string name = it.key();
if (name.empty()) {
return false;
}
// Get the arguments (the nested object)
const json & args_json = it.value();
std::string arguments = "";
if (args_json.is_object()) {
arguments = args_json.dump();
} else if (args_json.is_string()) {
arguments = args_json;
} else if (!args_json.is_null()) {
// For other types, convert to string representation
arguments = args_json.dump();
}
return add_tool_call(name, "", arguments);
}
void common_chat_msg_parser::finish() {
if (!is_partial_ && pos_ != input_.size()) {
throw std::runtime_error("Unexpected content at end of input");// + input_.substr(pos_));
}
}
bool common_chat_msg_parser::consume_spaces() {
const auto length = input_.size();
auto consumed = false;
while (pos_ < length && std::isspace(input_[pos_])) {
++pos_;
consumed = true;
}
return consumed;
}
bool common_chat_msg_parser::try_consume_literal(const std::string & literal) {
auto pos = pos_;
for (auto i = 0u; i < literal.size(); ++i) {
if (pos >= input_.size()) {
return false;
}
if (input_[pos] != literal[i]) {
return false;
}
++pos;
}
pos_ = pos;
return true;
}
std::optional<common_chat_msg_parser::find_regex_result> common_chat_msg_parser::try_find_literal(const std::string & literal) {
auto idx = input_.find(literal, pos_);
if (idx != std::string::npos) {
find_regex_result res;
res.prelude = input_.substr(pos_, idx - pos_);
auto end = idx + literal.size();
res.groups.emplace_back(common_string_range{idx, end});
move_to(end);
return res;
}
if (is_partial_) {
idx = string_find_partial_stop(input_, literal);
if (idx != std::string::npos && idx >= pos_) {
find_regex_result res;
res.prelude = input_.substr(pos_, idx - pos_);
auto end = input_.size();
res.groups.emplace_back(common_string_range{idx, end});
move_to(end);
return res;
}
}
return std::nullopt;
}
void common_chat_msg_parser::consume_literal(const std::string & literal) {
if (!try_consume_literal(literal)) {
throw common_chat_msg_partial_exception(literal);
}
}
bool common_chat_msg_parser::try_parse_reasoning(const std::string & start_think, const std::string & end_think) {
std::string pending_reasoning_prefix;
if (syntax_.reasoning_format == COMMON_REASONING_FORMAT_NONE) {
return false;
}
auto set_reasoning_prefix = [&](size_t prefix_pos) {
if (!syntax_.thinking_forced_open || syntax_.reasoning_in_content) {
return;
}
if (prefix_pos + start_think.size() > input_.size()) {
pending_reasoning_prefix.clear();
return;
}
// Capture the exact literal that opened the reasoning section so we can
// surface it back to callers. This ensures formats that force the
// reasoning tag open (e.g. DeepSeek R1) retain their original prefix
// instead of dropping it during parsing.
pending_reasoning_prefix = input_.substr(prefix_pos, start_think.size());
};
auto handle_reasoning = [&](const std::string & reasoning, bool closed) {
auto stripped_reasoning = string_strip(reasoning);
if (stripped_reasoning.empty()) {
return;
}
if (syntax_.reasoning_in_content) {
add_content(syntax_.reasoning_format == COMMON_REASONING_FORMAT_DEEPSEEK ? "<think>" : start_think);
add_content(stripped_reasoning);
if (closed) {
add_content(syntax_.reasoning_format == COMMON_REASONING_FORMAT_DEEPSEEK ? "</think>" : end_think);
}
} else {
if (!pending_reasoning_prefix.empty()) {
add_reasoning_content(pending_reasoning_prefix);
pending_reasoning_prefix.clear();
}
add_reasoning_content(stripped_reasoning);
}
};
const size_t saved_pos = pos_;
const size_t saved_content_size = result_.content.size();
const size_t saved_reasoning_size = result_.reasoning_content.size();
auto restore_state = [&]() {
move_to(saved_pos);
result_.content.resize(saved_content_size);
result_.reasoning_content.resize(saved_reasoning_size);
};
// Allow leading whitespace to be preserved as content when reasoning is present at the start
size_t cursor = pos_;
size_t whitespace_end = cursor;
while (whitespace_end < input_.size() && std::isspace(static_cast<unsigned char>(input_[whitespace_end]))) {
++whitespace_end;
}
if (whitespace_end >= input_.size()) {
restore_state();
if (syntax_.thinking_forced_open) {
auto rest = input_.substr(saved_pos);
if (!rest.empty()) {
handle_reasoning(rest, /* closed */ !is_partial());
}
move_to(input_.size());
return true;
}
return false;
}
cursor = whitespace_end;
const size_t remaining = input_.size() - cursor;
const size_t start_prefix = std::min(start_think.size(), remaining);
const bool has_start_tag = input_.compare(cursor, start_prefix, start_think, 0, start_prefix) == 0;
if (has_start_tag && start_prefix < start_think.size()) {
move_to(input_.size());
return true;
}
if (has_start_tag) {
if (whitespace_end > pos_) {
add_content(input_.substr(pos_, whitespace_end - pos_));
}
set_reasoning_prefix(cursor);
cursor += start_think.size();
} else if (syntax_.thinking_forced_open) {
cursor = whitespace_end;
} else {
restore_state();
return false;
}
while (true) {
if (cursor >= input_.size()) {
move_to(input_.size());
return true;
}
size_t end_pos = input_.find(end_think, cursor);
if (end_pos == std::string::npos) {
std::string_view remaining_view(input_.data() + cursor, input_.size() - cursor);
size_t partial_off = string_find_partial_stop(remaining_view, end_think);
size_t reasoning_end = partial_off == std::string::npos ? input_.size() : cursor + partial_off;
if (reasoning_end > cursor) {
handle_reasoning(input_.substr(cursor, reasoning_end - cursor), /* closed */ partial_off == std::string::npos && !is_partial());
}
move_to(input_.size());
return true;
}
if (end_pos > cursor) {
handle_reasoning(input_.substr(cursor, end_pos - cursor), /* closed */ true);
} else {
handle_reasoning("", /* closed */ true);
}
cursor = end_pos + end_think.size();
while (cursor < input_.size() && std::isspace(static_cast<unsigned char>(input_[cursor]))) {
++cursor;
}
const size_t next_remaining = input_.size() - cursor;
if (next_remaining == 0) {
move_to(cursor);
return true;
}
const size_t next_prefix = std::min(start_think.size(), next_remaining);
if (input_.compare(cursor, next_prefix, start_think, 0, next_prefix) == 0) {
if (next_prefix < start_think.size()) {
move_to(input_.size());
return true;
}
set_reasoning_prefix(cursor);
cursor += start_think.size();
continue;
}
move_to(cursor);
return true;
}
}
std::string common_chat_msg_parser::consume_rest() {
auto rest = input_.substr(pos_);
pos_ = input_.size();
return rest;
}
// Tries to find the regex, consumes it (pos right after it) and gives the prelude (right before it) and the groups to the callback.
std::optional<common_chat_msg_parser::find_regex_result> common_chat_msg_parser::try_find_regex(const common_regex & regex, size_t from, bool add_prelude_to_content) {
auto m = regex.search(input_, from == std::string::npos ? pos_ : from);
if (m.type == COMMON_REGEX_MATCH_TYPE_NONE) {
return std::nullopt;
}
auto prelude = input_.substr(pos_, m.groups[0].begin - pos_);
pos_ = m.groups[0].end;
if (add_prelude_to_content) {
add_content(prelude);
}
if (m.type == COMMON_REGEX_MATCH_TYPE_PARTIAL) {
if (is_partial()) {
throw common_chat_msg_partial_exception(regex.str());
}
return std::nullopt;
}
return find_regex_result{prelude, m.groups};
}
common_chat_msg_parser::find_regex_result common_chat_msg_parser::consume_regex(const common_regex & regex) {
if (auto result = try_consume_regex(regex)) {
return *result;
}
throw common_chat_msg_partial_exception(regex.str());
}
std::optional<common_chat_msg_parser::find_regex_result> common_chat_msg_parser::try_consume_regex(const common_regex & regex) {
auto m = regex.search(input_, pos_);
if (m.type == COMMON_REGEX_MATCH_TYPE_NONE) {
return std::nullopt;
}
if (m.type == COMMON_REGEX_MATCH_TYPE_PARTIAL) {
if (is_partial()) {
throw common_chat_msg_partial_exception(regex.str());
}
return std::nullopt;
}
if (m.groups[0].begin != pos_) {
// Didn't match at the current position.
return std::nullopt;
}
pos_ = m.groups[0].end;
return find_regex_result {
/* .prelude = */ "",
m.groups,
};
}
std::optional<common_json> common_chat_msg_parser::try_consume_json() {
auto it = input_.cbegin() + pos_;
const auto end = input_.cend();
common_json result;
if (!common_json_parse(it, end, healing_marker_, result)) {
return std::nullopt;
}
pos_ = std::distance(input_.cbegin(), it);
if (result.healing_marker.marker.empty()) {
// No healing marker, just return the parsed json
return result;
}
if (!is_partial()) {
throw common_chat_msg_partial_exception("JSON");
}
return result;
}
common_json common_chat_msg_parser::consume_json() {
if (auto result = try_consume_json()) {
return *result;
}
throw common_chat_msg_partial_exception("JSON");
}
common_chat_msg_parser::consume_json_result common_chat_msg_parser::consume_json_with_dumped_args(
const std::vector<std::vector<std::string>> & args_paths,
const std::vector<std::vector<std::string>> & content_paths
) {
if (auto result = try_consume_json_with_dumped_args(args_paths, content_paths)) {
return *result;
}
throw common_chat_msg_partial_exception("JSON");
}
std::optional<common_chat_msg_parser::consume_json_result> common_chat_msg_parser::try_consume_json_with_dumped_args(
const std::vector<std::vector<std::string>> & args_paths,
const std::vector<std::vector<std::string>> & content_paths
) {
auto partial = try_consume_json();
if (!partial) {
return std::nullopt;
}
auto is_arguments_path = [&](const std::vector<std::string> & path) {
return std::find(args_paths.begin(), args_paths.end(), path) != args_paths.end();
};
auto is_content_path = [&](const std::vector<std::string> & path) {
return std::find(content_paths.begin(), content_paths.end(), path) != content_paths.end();
};
if (partial->healing_marker.marker.empty()) {
if (args_paths.empty()) {
// No arguments to dump, and JSON was parsed fully.
return consume_json_result {
partial->json,
/* .is_partial = */ false,
};
}
if (is_arguments_path({})) {
// Entire JSON is the arguments and was parsed fully.
return consume_json_result {
partial->json.dump(/* indent */ -1, /* indent_char */ ' ', /* ensure_ascii */ true),
/* .is_partial = */ false,
};
}
}
LOG_DBG("Parsed partial JSON: %s (json_healing_marker: %s)\n", partial->json.dump().c_str(), partial->healing_marker.json_dump_marker.c_str());
auto found_healing_marker = false;
std::vector<std::string> path;
std::function<json(const json &)> remove_unsupported_healings_and_dump_args = [&](const json & j) -> json {
if (is_arguments_path(path)) {
auto arguments = j.dump(/* indent */ -1, /* indent_char */ ' ', /* ensure_ascii */ true);
if (is_partial() && !partial->healing_marker.marker.empty()) {
auto idx = arguments.find(partial->healing_marker.json_dump_marker);
if (idx != std::string::npos) {
arguments.resize(idx);
found_healing_marker = true;
}
if (arguments == "\"") {
// This happens because of completing `:"$magic` after `"arguments"`
arguments = "";
}
}
return arguments;
}
if (is_content_path(path)) {
if (!j.is_string()) {
throw std::runtime_error("Content path must be a string");
}
std::string str = j;
auto idx = str.find(partial->healing_marker.marker); // not using json_dump_marker as we're inside a string
if (idx != std::string::npos) {
str.resize(idx);
found_healing_marker = true;
}
return str;
}
if (j.is_object()) {
auto obj = json::object();
for (const auto & p : j.items()) {
const auto & key = p.key();
const auto & value = p.value();
const std::string key_str = key; // NOLINT
auto idx = key_str.find(healing_marker_);
if (idx != std::string::npos) {
found_healing_marker = true;
break;
}
path.push_back(key_str);
if (value.is_string()) {
const std::string value_str = value;
if (value_str.find(healing_marker_) != std::string::npos) {
found_healing_marker = true;
if (is_content_path(path)) {
if (partial->healing_marker.marker == partial->healing_marker.json_dump_marker) {
// The healing occurred inside the string: good. Otherwise we just ditch the entire key/value pair.
obj[key] = remove_unsupported_healings_and_dump_args(value);
}
}
break;
}
obj[key] = value;
} else {
obj[key] = remove_unsupported_healings_and_dump_args(value);
}
path.pop_back();
}
return obj;
}
if (j.is_array()) {
auto arr = json::array();
for (const auto & value : j) {
if (value.is_string()) {
std::string str = value;
auto idx = str.find(healing_marker_);
if (idx != std::string::npos) {
// Don't heal array values that aren't in the arguments.
found_healing_marker = true;
break;
}
}
arr.push_back(remove_unsupported_healings_and_dump_args(value));
}
return arr;
}
return j;
};
auto cleaned = remove_unsupported_healings_and_dump_args(partial->json);
LOG_DBG("Cleaned up JSON %s to %s (json_healing_marker : '%s')\n", partial->json.dump().c_str(), cleaned.dump().c_str(), partial->healing_marker.json_dump_marker.c_str());
return consume_json_result {
cleaned,
/* .is_partial = */ found_healing_marker,
};
}
void common_chat_msg_parser::clear_tools() {
result_.tool_calls.clear();
}
/**
* All common_chat_parse_* moved from chat.cpp to chat-parser.cpp below
* to reduce incremental compile time for parser changes.
*/
static void common_chat_parse_generic(common_chat_msg_parser & builder) {
if (!builder.syntax().parse_tool_calls) {
builder.add_content(builder.consume_rest());
return;
}
static const std::vector<std::vector<std::string>> content_paths = {
{"response"},
};
static const std::vector<std::vector<std::string>> args_paths = {
{"tool_call", "arguments"},
{"tool_calls", "arguments"},
};
auto data = builder.consume_json_with_dumped_args(args_paths, content_paths);
if (data.value.contains("tool_calls")) {
if (!builder.add_tool_calls(data.value.at("tool_calls")) || data.is_partial) {
throw common_chat_msg_partial_exception("incomplete tool calls");
}
} else if (data.value.contains("tool_call")) {
if (!builder.add_tool_call(data.value.at("tool_call")) || data.is_partial) {
throw common_chat_msg_partial_exception("incomplete tool call");
}
} else if (data.value.contains("response")) {
const auto & response = data.value.at("response");
builder.add_content(response.is_string() ? response.template get<std::string>() : response.dump(2));
if (data.is_partial) {
throw common_chat_msg_partial_exception("incomplete response");
}
} else {
throw common_chat_msg_partial_exception("Expected 'tool_call', 'tool_calls' or 'response' in JSON");
}
}
static void common_chat_parse_mistral_nemo(common_chat_msg_parser & builder) {
if (!builder.syntax().parse_tool_calls) {
builder.add_content(builder.consume_rest());
return;
}
static const common_regex prefix(regex_escape("[TOOL_CALLS]"));
parse_prefixed_json_tool_call_array(builder, prefix);
}
static void common_chat_parse_magistral(common_chat_msg_parser & builder) {
builder.try_parse_reasoning("[THINK]", "[/THINK]");
if (!builder.syntax().parse_tool_calls) {
builder.add_content(builder.consume_rest());
return;
}
static const common_regex prefix(regex_escape("[TOOL_CALLS]"));
parse_prefixed_json_tool_call_array(builder, prefix);
}
static void common_chat_parse_command_r7b(common_chat_msg_parser & builder) {
builder.try_parse_reasoning("<|START_THINKING|>", "<|END_THINKING|>");
static const common_regex start_action_regex("<\\|START_ACTION\\|>");
static const common_regex end_action_regex("<\\|END_ACTION\\|>");
static const common_regex start_response_regex("<\\|START_RESPONSE\\|>");
static const common_regex end_response_regex("<\\|END_RESPONSE\\|>");
if (auto res = builder.try_find_regex(start_action_regex)) {
// If we didn't extract thoughts, prelude includes them.
auto tool_calls = builder.consume_json_with_dumped_args({{"parameters"}});
for (const auto & tool_call : tool_calls.value) {
std::string name = tool_call.contains("tool_name") ? tool_call.at("tool_name") : "";
std::string id = tool_call.contains("tool_call_id") ? tool_call.at("tool_call_id") : "";
std::string arguments = tool_call.contains("parameters") ? tool_call.at("parameters") : "";
if (!builder.add_tool_call(name, id, arguments) || tool_calls.is_partial) {
throw common_chat_msg_partial_exception("incomplete tool call");
}
}
if (tool_calls.is_partial) {
throw common_chat_msg_partial_exception("incomplete tool call");
}
builder.consume_regex(end_action_regex);
} else if (auto res = builder.try_find_regex(start_response_regex)) {
if (!builder.try_find_regex(end_response_regex)) {
builder.add_content(builder.consume_rest());
throw common_chat_msg_partial_exception(end_response_regex.str());
}
} else {
builder.add_content(builder.consume_rest());
}
}
static void common_chat_parse_llama_3_1(common_chat_msg_parser & builder, bool with_builtin_tools = false) {
builder.try_parse_reasoning("<think>", "</think>");
if (!builder.syntax().parse_tool_calls) {
builder.add_content(builder.consume_rest());
return;
}
static const common_regex function_regex(
"\\s*\\{\\s*(?:\"type\"\\s*:\\s*\"function\"\\s*,\\s*)?\"name\"\\s*:\\s*\"([^\"]+)\"\\s*,\\s*\"parameters\"\\s*: ");
static const common_regex close_regex("\\}\\s*");
static const common_regex function_name_regex("\\s*(\\w+)\\s*\\.\\s*call\\(");
static const common_regex arg_name_regex("\\s*(\\w+)\\s*=\\s*");
if (with_builtin_tools) {
static const common_regex builtin_call_regex("<\\|python_tag\\|>");
if (auto res = builder.try_find_regex(builtin_call_regex)) {
auto fun_res = builder.consume_regex(function_name_regex);
auto function_name = builder.str(fun_res.groups[1]);
common_healing_marker healing_marker;
json args = json::object();
while (true) {
if (auto arg_res = builder.try_consume_regex(arg_name_regex)) {
auto arg_name = builder.str(arg_res->groups[1]);
auto partial = builder.consume_json();
args[arg_name] = partial.json;
healing_marker.marker = partial.healing_marker.marker;
healing_marker.json_dump_marker = partial.healing_marker.json_dump_marker;
builder.consume_spaces();
if (!builder.try_consume_literal(",")) {
break;
}
} else {
break;
}
}
builder.consume_literal(")");
builder.consume_spaces();
auto arguments = args.dump();
if (!builder.add_tool_call(function_name, "", arguments)) {
throw common_chat_msg_partial_exception("Incomplete tool call");
}
return;
}
}
parse_json_tool_calls(
builder,
/* block_open= */ std::nullopt,
/* function_regex_start_only= */ function_regex,
/* function_regex= */ std::nullopt,
close_regex,
std::nullopt);
}
static void common_chat_parse_deepseek_r1(common_chat_msg_parser & builder) {
builder.try_parse_reasoning("<think>", "</think>");
if (!builder.syntax().parse_tool_calls) {
builder.add_content(builder.consume_rest());
return;
}
static const common_regex tool_calls_begin("(?:<｜tool▁calls▁begin｜>|<｜tool_calls_begin｜>|<｜tool calls begin｜>|<｜tool\\\\_calls\\\\_begin｜>|<｜tool▁calls｜>)");
static const common_regex tool_calls_end("<｜tool▁calls▁end｜>");
static const common_regex function_regex("(?:<｜tool▁call▁begin｜>)?function<｜tool▁sep｜>([^\n]+)\n```json\n");
static const common_regex close_regex("```[\\s\\r\\n]*<｜tool▁call▁end｜>");
parse_json_tool_calls(
builder,
/* block_open= */ tool_calls_begin,
/* function_regex_start_only= */ std::nullopt,
function_regex,
close_regex,
tool_calls_end);
}
static void common_chat_parse_deepseek_v3_1_content(common_chat_msg_parser & builder) {
static const common_regex function_regex("(?:<｜tool▁call▁begin｜>)?([^\\n<]+)(?:<｜tool▁sep｜>)");
static const common_regex close_regex("(?:[\\s]*)?<｜tool▁call▁end｜>");
static const common_regex tool_calls_begin("(?:<｜tool▁calls▁begin｜>|<｜tool_calls_begin｜>|<｜tool calls begin｜>|<｜tool\\\\_calls\\\\_begin｜>|<｜tool▁calls｜>)");
static const common_regex tool_calls_end("<｜tool▁calls▁end｜>");
if (!builder.syntax().parse_tool_calls) {
LOG_DBG("%s: not parse_tool_calls\n", __func__);
builder.add_content(builder.consume_rest());
return;
}
LOG_DBG("%s: parse_tool_calls\n", __func__);
parse_json_tool_calls(
builder,
/* block_open= */ tool_calls_begin,
/* function_regex_start_only= */ std::nullopt,
function_regex,
close_regex,
tool_calls_end);
}
static void common_chat_parse_deepseek_v3_1(common_chat_msg_parser & builder) {
// DeepSeek V3.1 outputs reasoning content between "<think>" and "</think>" tags, followed by regular content
// First try to parse using the standard reasoning parsing method
LOG_DBG("%s: thinking_forced_open: %s\n", __func__, std::to_string(builder.syntax().thinking_forced_open).c_str());
auto start_pos = builder.pos();
auto found_end_think = builder.try_find_literal("</think>");
builder.move_to(start_pos);
if (builder.syntax().thinking_forced_open && !builder.is_partial() && !found_end_think) {
LOG_DBG("%s: no end_think, not partial, adding content\n", __func__);
common_chat_parse_deepseek_v3_1_content(builder);
} else if (builder.try_parse_reasoning("<think>", "</think>")) {
// If reasoning was parsed successfully, the remaining content is regular content
LOG_DBG("%s: parsed reasoning, adding content\n", __func__);
// </think><｜tool▁calls▁begin｜><｜tool▁call▁begin｜>function<｜tool▁sep｜>NAME\n```json\nJSON\n```<｜tool▁call▁end｜><｜tool▁calls▁end｜>
common_chat_parse_deepseek_v3_1_content(builder);
} else {
if (builder.syntax().reasoning_format == COMMON_REASONING_FORMAT_NONE) {
LOG_DBG("%s: reasoning_format none, adding content\n", __func__);
common_chat_parse_deepseek_v3_1_content(builder);
return;
}
// If no reasoning tags found, check if we should treat everything as reasoning
if (builder.syntax().thinking_forced_open) {
// If thinking is forced open but no tags found, treat everything as reasoning
LOG_DBG("%s: thinking_forced_open, adding reasoning content\n", __func__);
builder.add_reasoning_content(builder.consume_rest());
} else {
LOG_DBG("%s: no thinking_forced_open, adding content\n", __func__);
// <｜tool▁call▁begin｜>NAME<｜tool▁sep｜>JSON<｜tool▁call▁end｜>
common_chat_parse_deepseek_v3_1_content(builder);
}
}
}
static void common_chat_parse_minimax_m2(common_chat_msg_parser & builder) {
static const xml_tool_call_format form {
/* form.scope_start = */ "<minimax:tool_call>",
/* form.tool_start = */ "<invoke name=\"",
/* form.tool_sep = */ "\">",
/* form.key_start = */ "<parameter name=\"",
/* form.key_val_sep = */ "\">",
/* form.val_end = */ "</parameter>",
/* form.tool_end = */ "</invoke>",
/* form.scope_end = */ "</minimax:tool_call>",
};
builder.consume_reasoning_with_xml_tool_calls(form, "<think>", "</think>");
}
static void common_chat_parse_qwen3_coder_xml(common_chat_msg_parser & builder) {
static const xml_tool_call_format form = ([]() {
xml_tool_call_format form {};
form.scope_start = "<tool_call>";
form.tool_start = "<function=";
form.tool_sep = ">";
form.key_start = "<parameter=";
form.key_val_sep = ">";
form.val_end = "</parameter>";
form.tool_end = "</function>";
form.scope_end = "</tool_call>";
form.trim_raw_argval = true;
return form;
})();
builder.consume_reasoning_with_xml_tool_calls(form);
}
static void common_chat_parse_kimi_k2(common_chat_msg_parser & builder) {
static const xml_tool_call_format form = ([]() {
xml_tool_call_format form {};
form.scope_start = "<|tool_calls_section_begin|>";
form.tool_start = "<|tool_call_begin|>";
form.tool_sep = "<|tool_call_argument_begin|>{";
form.key_start = "\"";
form.key_val_sep = "\":";
form.val_end = ",";
form.tool_end = "}<|tool_call_end|>";
form.scope_end = "<|tool_calls_section_end|>";
form.raw_argval = false;
form.last_val_end = "";
form.allow_toolcall_in_think = true;
return form;
})();
builder.consume_reasoning_with_xml_tool_calls(form, "<think>", "</think>");
}
static void common_chat_parse_apriel_1_5(common_chat_msg_parser & builder) {
static const xml_tool_call_format form = ([]() {
xml_tool_call_format form {};
form.scope_start = "<tool_calls>[";
form.tool_start = "{\"name\": \"";
form.tool_sep = "\", \"arguments\": {";
form.key_start = "\"";
form.key_val_sep = "\": ";
form.val_end = ", ";
form.tool_end = "}, ";
form.scope_end = "]</tool_calls>";
form.raw_argval = false;
form.last_val_end = "";
form.last_tool_end = "}";
return form;
})();
builder.consume_reasoning_with_xml_tool_calls(form, "<thinking>", "</thinking>");
}
static void common_chat_parse_xiaomi_mimo(common_chat_msg_parser & builder) {
static const xml_tool_call_format form = ([]() {
xml_tool_call_format form {};
form.scope_start = "";
form.tool_start = "<tool_call>\n{\"name\": \"";
form.tool_sep = "\", \"arguments\": {";
form.key_start = "\"";
form.key_val_sep = "\": ";
form.val_end = ", ";
form.tool_end = "}\n</tool_call>";
form.scope_end = "";
form.raw_argval = false;
form.last_val_end = "";
return form;
})();
builder.consume_reasoning_with_xml_tool_calls(form);
}
static void common_chat_parse_gpt_oss(common_chat_msg_parser & builder) {
static const std::string constraint = "(?: (<\\|constrain\\|>)?([a-zA-Z0-9_-]+))";
static const std::string recipient("(?: to=functions\\.([^<\\s]+))");
static const common_regex start_regex("<\\|start\\|>assistant");
static const common_regex analysis_regex("<\\|channel\\|>analysis");
static const common_regex final_regex("<\\|channel\\|>final" + constraint + "?");
static const common_regex preamble_regex("<\\|channel\\|>commentary");
static const common_regex tool_call1_regex(recipient + "<\\|channel\\|>(analysis|commentary)" + constraint + "?");
static const common_regex tool_call2_regex("<\\|channel\\|>(analysis|commentary)" + recipient + constraint + "?");
auto consume_end = [&](bool include_end = false) {
if (auto res = builder.try_find_literal("<|end|>")) {
return res->prelude + (include_end ? builder.str(res->groups[0]) : "");
}
return builder.consume_rest();
};
auto handle_tool_call = [&](const std::string & name) {
if (auto args = builder.try_consume_json_with_dumped_args({{}})) {
if (builder.syntax().parse_tool_calls) {
if (!builder.add_tool_call(name, "", args->value) || args->is_partial) {
throw common_chat_msg_partial_exception("incomplete tool call");
}
} else if (args->is_partial) {
throw common_chat_msg_partial_exception("incomplete tool call");
}
}
};
auto regex_match = [](const common_regex & regex, const std::string & input) -> std::optional<common_regex_match> {
auto match = regex.search(input, 0, true);